Simpsons Comics #147

It's Science Fair time at Springfield Elementary, and Lisa sets out to win the top prize. Her daring experiment into the genetic similarities between the members of the Simpson family blows up in her face when she discovers that one member of her immediate family is not a blood relative. You'll never guess who it is! Meanwhile, Bart and Milhouse stage their own experiment in sleep deprivation, which results in a lot of other things blowing up! Sign up with the Simpsons in October!

Characters: Bart Simpson, Database, Edna Krabappel, Groundskeeper Willie, Homer Simpson, Janey Powell, Lewis (Simpsons), Lisa Simpson, Maggie Simpson, Marge Simpson, Martin Prince, Milhouse Van Houten, Miss Hoover, Ned Flanders, Nelson Muntz, Principal Skinner, Professor Frink, Ralph Wiggum, Richard (Simpsons), Rod Flanders, Santa's Little Helper, Sherri, Sideshow Mel, Snowball II, Superintendent Chalmers, Terri (Simpsons), Todd Flanders, Uter, Wendell (Simpsons)